Knife blade



FIG. 1 is a perspective view of a knife blade showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a rear view thereof; and,

FIG. 8 is an additional perspective view thereof with two enlarged portions. 

The ornamental design for a knife blade, as shown and described. 